> It's all in the same part of the brain that says that 256 is a nice round number. I recognize the feeling you're talking about, but I wouldn't go so far as t

> It's all in the same part of the brain that says that 256 is a nice round number. I recognize the feeling you're talking about, but I wouldn't go so far as to call it round. I'd call it familiar. It's the same sense that makes me see 42 and think "nice number", or 1983, or 255 even. Round, on the other hand, requires more than simple recognition, it also requires easy calculation. Calculating 4 * 256 isn't that hard, but when I go for 6 * 256, I'll have to split it in 4256 + 2256. It's even worse for 1048576. Whereas decimally round numbers are very easy to do calculations on.